individual or subpanel need rough-in thoughts

[bugnut]

I have a 30x40 10ft tall outbuilding with its own meter, and 200 amp service panel.
I am wanting a second location for compressor and welder connections, closer to other equipment. A wiring distance of 75 feet. The other equipment is using a phase converter, so hp and motor size is limited by phase converter.

As I prepare to rough this in, I was struck by the question should I just add a subpanel and create the connections off the subpanel or pull each separately? I am only doing the rough in so that is my focus.

This will be behind plywood insulated walls that are in the process of being installed.

Below are equipment tag and controls, I am thinking a ** amp sub panel is more than sufficient. I also want to size wire for the appropriate breaker so if future needs dictate I am not hamstrung by undersize wiring.

tags below, in order, air compressor, welder receptacle for both welders, phase converter, welder tag and 2nd welder tag.

TIA, bugnut

 

[mike93lx]

I would install a sub. Only one set of wires to run, plus the added benefit of local disconnects

 

[anythingyoucanimagine]

Yes what mike93lx said. One set of wires.

Why plywood? Not trying to be a jerk but you did mention welders. Firecode drywall is cheaper, quieter and safer. 5/8" drywall holds up pretty well too. I did my garage a little backwards, I hung the bottom sheets first. I placed them on short sections of 2x4 so the drywall was up 1.5" off the slab, then it was easy to lift up the top sheets and screw them on. The firecode has been really durable (three years now).


I have a little red 140 (with gas), a red precision 225 and a blue 350P. Only time I've ever worried about fire is when my dust collector sucked up a chunk that got caught by the impeller and made a friction ember. I'd be crazy paranoid if I had plywood walls and welders. Sounds like asking for trouble...


Put a panel in the outbuilding. Go at least 1x bigger size conduit than minimum. Maybe consider running a second smaller conduit run for data/telco stuff. (never know when you'll want wifi out in the shop)

 

[sberry]

Are you talking within the same building? The larger the building the more it pays but no sin in adding my new fave the 12 space main lug, got a big box and 12 circuits is better if you are providing for more than 2 machines. If I was putting these units on the far wall it would be worth it to me to run a 2 ser cable over and be able to hook all the runs to the far wall to it. Like all branch and T systems, when you are running 1 thing at a time it delivers superior service.
I have 5 subs, my building but it is tall and 80x80 and 120 ft of wire just to get to the other side. It let me have welder outlet at each location for free.
Not so critical with a 200 panel as there are normally 40 spaces but those with smaller panels can gain some for easy. Most of my secondary or final is about 10 ft of the panels and it cost a few extra breakers to put circuits to right and left, some I never bother to consolidate in the end. Wire and pipe about the same cost. Lots of duplexes here right to the breaker and very little daisy chain.

 

[sberry]

All those machines can run 12 wire under some circumstances. I am not a fan of a couple of the minimums. Also the comp is rather minmal and I can see changing that out for a better one at some point. If I was doing this in little circuits would be 10 wire at that distance and 2 pipes as I might want to add a 120 or even 2 depending on various equipment. That is 10 panel spaces and 5 or 5 runs, a 12 space panel and some ser is starting to look quite economical and convenient. The bonus is that the stuff is running down 60 ft of number 2 vs number 10, not a huge deal in efficiency but no loss for sure.

 

[bullnerd]

I am looking to do the same thing.

I still dont know how to do it.

https://www.garagejournal.com/forum/showthread.php?t=413776

 

[wyliesdiesels]

post a pic of the motor nameplate on the comp